166 
Hr 
0.625 
0.352 
0.977 
Stat. No. 363 364 368 371 
W 0.450 0.500 0.390 0.500 
D 0.085 0.144 0.149 0.491 
S 0.535 0.644 0.539 0.991 
Stromfladen, Pl. XLITT, construeredes saaledes.  Vær- 
dierne af S afsattes i Kartet. For hver 5. Længdegrad, 
Kartets Meridianer, og for hver 21/, Breddegrad fra 559 
til 80° construeredes Tversnit af Tæthedsfladen og af Vind- 
fladen paa samme Abscisselinie, efter Kartets Maalestok. 
De to Fladers Ordinater adderedes (grafisk) sammen. Gjen- 
nem de saaledes fundne Punkter droges Strømfladens Tver- 
snit. Denne Curves Skjæringslinier med Horizontallinierne 
i Snittet for hver Decimeter afsattes i Kartet langs de 
respective Meridianer og Paralleler. Gjennem de saaledes 
fundne Punkter droges Ligehøjdeliniernei Kartet Pl. X LITT 
for hver Decimeter og afpassedes i Mellemrummene efter 
Tabellens Værdier for S. 
Strømfladen er i Forhold til Niveaufladen en hul 
Flade, der har sit dybeste Punkt mellem Jan Mayen og Norge 
i 6895 N. Br. og 1° W. Led. I dette Punkt ligger den 
kun nogle faa Millimeter lavere end Kartets inderste Lige- 
højdelinie, den for 0.000 Meter. Fra dette dybeste Punkt 
løfter Strømfladen sig til alle Sider. Den naar sin største 
Højde — over Niveaufladen gjennem dens dybeste Punkt — 
ved Norges Vestkyst og i Skagerak. hvor den stiger til over 
1.4 Meter. Ved Grønland naar den en Højde af 1.4 Meter, 
ved Spidsbergen 1.0 Meter, ved Novaja Semlja 1.2 Meter, 
ved Finmarkens Kyst 0.9 Meter, ved Skotlands Kyst 1.0 
til 1.1 Meter og ved Islands Nordkyst 0.6 Meter. Ved 
Jan Mayen er Højden 0.6 Meter, men ved Beeren-Eiland 
kun 0.3 Meter. 
10. Strømningerne i Overfladen. 
Strømfladen, Pl. XLIIT, giver. det bedste Billede af 
Vandets normale Bevægelse i Havets Overflade. Bevægel- 
sens Retning er langs Ligehøjdelinierne, cyclonisk, med de 
større Højder til Højre, de mindre til Venstre, som udtrykt 
ved de paa Kartet satte Pilespidser. Man bemerker, at 
langs Norges Kyst er Niveauet faldende fra Syd mod Nord, 
hvad der giver en Heldning, som tillader Tyngden at over- 
vinde Frictionen langs Kysten. Denne Heldning skyldes 
det fra Landet udflydende ferske Elvevand. Det samme 
er Tilfældet ved Grønlands Kyst, hvor Heldningen er fra 
Nord mod Syd, altsaa ogsaa i Bevægelsens Retning. Ogsaa 
ved Spidsbergen og ved Island sees, ialfald tildels, Held- 
ninger i Havspejlet i Retning af Vandets Bevægelse. Paa 
Østkysten af Skotland, ved 5795 N. Br., synes Heldningen 
i Overfladen at pege nordover, medens Bevægelsen maa 
foregaa langs Kysten sydover. Dette kan muligens være 
(diagrammatically). 
Hy Hy Gy Gy Gin 
0.820 0.850 0.600 0.700 0.775 
0.438 0.459 0.229 0.315 0.4.00 
1.258 1.309 6.829 1.015 1.175 
The current-surface, Pl. XLIIT, was constructed as 
follows. The values of S were set off on the map. For 
every fifth degree of longitude, the meridians of the map, 
and for every two and a half degrees of latitude, from the 
ddth to the 80th parallel, were constructed transverse sec- 
tions of the surface of density and of the wind-surtace on 
the same line of abscisse, according to the scale of the 
map. The ordinates of the two surfaces were added together 
Through the points thus determined 
were drawn the transverse sections of the current-surtace. 
The points of intersection of this curve with the horizontal 
lines for every decimetre in the section, were set off on the 
map along the respective meridians and parallels. Through 
the points thus determined were drawn the lines of equal 
height on the map, Pl. XLIII, for every decimetre, and ad- 
justed throughout the intermediate spaces according to the 
values in the Table for S. 
The current-surface, compared to the surface of 
level, is hollow, and has its deepest point between Jan 
Mayen and Norway, in lat. 68°.5 N and longitude 1° W. 
At this point, it lies but a few millimetres deeper than the 
map's innermost line of equal height, viz., that for 0.000 
metre. From this its deepest point the current-surface rises 
on all sides. It reaches its greatest height — above the sur- 
face of level through its deepest point — at the West Coast 
of Norway and in the Skagerak, where it rises to upwards 
of 1.4 metre. At Greenland it reaches a height of 1.4 
metre; at Spitzbergen 1.0 metre; at Novaja Semlja 1.2 
metre; at the coast of Finmark 0.9 metre; at the coast of 
Scotland 1.0 to 1.1 metre; and at the north coast of Ice- 
land 0.6 metre. At Jan Mayen the height is 0.6 metre; 
but at Beeren Eiland only 0.3 metre. 
10. The Currents of the Surface. 
The current-surface, Pl. XLIII, gives the best repre- 
sentation of the normal motion of the water at the sur- 
face of the sea. The motion follows the lines of equal 
height, cyclonically, having the greater heights to the 
right, the lesser to the left, as indicated by the arrow- 
heads in the map. We observe that along the coast of 
Norway the level falls from south to north, which gives 
an inclination allowing gravity to overcome the friction 
along the coast. This inclination 
water flowing seaward from the land. 
is the result of river- 
A similar phenomenen 
occurs at the coast of Greenland, where the inclination 
extends from north to south; here .too, therefore, in the 
direction of the motion. At Spitzbergen likewise, and 
Iceland, in some places at least, are met with inclinations 
of the surface of the sea in the direction taken by the 
water. On the east coast of Scotland, lat. 57°.5 N, the 
